Exp 8 - Aldol Condensation Using an Unknown Aldehyde and an...

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Aldol Condensation Using an Unknown Aldehyde and an Unknown Ketone 12/1/08 Tyler Argent Exp. 8 CH 237 Adapted from “Experimental Organic Chemistry,” Mohrig, J.R.; Morrill, T.C., Hammond, C.N.; Neckers, D.C. W.H Freeman and Co., New York, pp 408-418. I. Pre-Lab: (Attached) II. Experiment Notes and Observations: (Refer to Pre-Lab) III. Results: ALDEHYDES Melting Point of Recrystallized Product KETONES Acetone Cyclopentanone Cyclohexanone 4-Methylcyclohexanone Benzaldehyde 113°C 189°C 118°C 98°C – 99°C p -tolualdehyde 175°C 235°C – 236°C 170°C 113°C – 113.5°C p -anisaldehyde 129°C- 130°C 212°C 159°C 141°C – 142°C Cinnamaldehyde 144°C 225°C 180°C 163°C - 164°C
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- Structure for starting materials and product(#269-A, 2 mL; #376-K, 0.5 mL) - Theoretical Yield of Final Product: --0.5 mL cyclopentanone x (0.95 g/mL) x (1 mole/84.12 g) = 0.0056 moles -- (0.0056 moles) x (288.2 g/mol) = 1.61 g - Isolated and Percent Yield of Final Product: --Isolated yield: 1.26 g -- Percent yield: (1.26g/1.62g) x 100% = 77.8% - Melting Point Range: 239C-245C - See Attached Sheets for IR and NMR
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IV. Discussion: The goal of the experiment was to identify the starting materials and products in an aldol reaction. The reaction began with two unknowns. The unknowns were found to be
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Exp 8 - Aldol Condensation Using an Unknown Aldehyde and an...

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